Individual warning using electric signals

使用电信号进行单独警告

• 批准号: 317652676
• 负责人: Professor Dr.-Ing. Jens Haueisen
• 金额: --
• 依托单位: Institut für technische Logistik und Arbeitssysteme
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/317652676?language=en
• 关键词: Individual; warning; using; electric; signals

Labor situations in potentially dangerous environments (e.g. railway tracks, road construction sites, in containers or during maintenance work in unclear facilities) require the reliable and individual warning of employees in case of danger so that they can get themselves into safety. State of the art are warning systems with optical (e.g. signal lamps), acoustic (e.g. sirens), or rarely, vibratory signals. Problematic situations arise when signal perception is impeded by distractions or various environmental influences. A new research approach involves electrical signals that can be applied reliably and easily to the skin surface using textiles.The overall goal is to establish a functioning, regulation-compliant warning system based on electrical stimulation that meets the requirements of the individual user. Thus, research into stimulation techniques is required, and stimulation thresholds must be determined to reliably detect electrical signals. In our work, we investigate the perceptibility of electrical stimulation, while simultaneously minimizing impairing functional effects. This innovative research approach complements already existing ones. However, there are no standards so that in a first step, a knowledge base must be developed exploratively.Based on 4 working hypotheses, in project phase 1, part 1, we were able to show that warning by means of electrical stimulation is possible under laboratory conditions. In extensive experiments with different signal forms, suitable signal types ensuring a reliable warning were established. A study was carried out based on 68 participants with adhesive electrodes in order to determine the basic perception thresholds, neglecting interfering influences such as climate, tools, working postures, or PSA. As a result, three threshold values could be defined: - Perception threshold- Attention threshold and- Intolerance threshold.In addition, concepts for textile functional models with different electrode designs have been developed.In project phase 1, part 2, the perceptual thresholds are to be investigated, i.e. signal perception under consideration of the above-mentioned influencing factors must be evaluated. Furthermore, the perception of spatial-temporal patterns on multiple electrodes will be investigated. For this purpose, the construction of a special laboratory space for the simulation of environmental influences (temperature, humidity, air movement) is planned. The study will initially be carried out with adhesive electrodes in accordance with project phase 1, part 1, in order to ensure comparability of the results. Based on functional samples (part 1), sleeves will be manufactured and examined by test persons. The threshold values are the basis for the future development of a warning system using electrical signals. Subsequently, i.e. in project phase 2, long-term and habituation effects will be investigated.

在潜在危险环境中的劳动情况（例如铁路轨道、道路施工现场、集装箱内或在不清楚的设施中进行维护工作期间），需要在危险情况下向员工发出可靠的个人警告，以便他们能够进入安全地带。现有技术是具有光学（例如信号灯）、声学（例如警报器）或很少的振动信号的警告系统。当信号感知受到干扰或各种环境影响的阻碍时，就会出现问题。一种新的研究方法涉及电信号，可以使用纺织品可靠而容易地施加到皮肤表面。总体目标是建立一个基于电刺激的功能性，符合法规的警告系统，满足个人用户的要求。因此，需要对刺激技术进行研究，并且必须确定刺激阈值以可靠地检测电信号。在我们的工作中，我们研究电刺激的可感知性，同时最大限度地减少损害功能的影响。这种创新的研究方法是对现有研究方法的补充。然而，没有标准，因此在第一步，必须探索性地开发知识库。基于4个工作假设，在项目第1阶段，第1部分，我们能够表明，通过电刺激的警告是可能的，在实验室条件下。在不同信号形式的广泛实验中，建立了确保可靠警报的合适信号类型。基于68名使用粘合电极的参与者进行了一项研究，以确定基本的感知阈值，忽略气候，工具，工作姿势或PSA等干扰影响。因此，可以定义三个阈值：-感知阈值-注意阈值和-不耐受阈值。此外，还开发了具有不同电极设计的织物功能模型的概念。在项目第1阶段第2部分，将研究感知阈值，即必须评估考虑上述影响因素的信号感知。此外，将研究多个电极上的时空模式的感知。为此，计划建造一个特殊的实验室空间，用于模拟环境影响（温度，湿度，空气流动）。根据项目第1阶段第1部分，最初将使用粘性电极进行研究，以确保结果的可比性。根据功能样品（第1部分），将制造套管并由测试人员进行检查。阈值是未来开发使用电信号的报警系统的基础。随后，即在项目第二阶段，将研究长期和习惯化效应。